docs: def emailErrorMessage(subject,message):
      '''
      Useful for sending error messages via email.
      '''
      if not getConstant('email__enableErrorEmails'):
          logger.info('Not sending error email: error emails are not enabled.')
          return
  
      send_from = getConstant('email__errorEmailFrom')
      send_to = getConstant('email__errorEmailTo')
  
      if not send_from or not send_to:
          logger.error('Cannot send error emails because addresses have not been specified.')
          return
  
      try:
          send_mail(subject,message,
                    send_from,
                    [send_to], fail_silently=False)
          logger.debug('Error email sent.')
      except Exception as e:
          logger.error('Error email was not sent: %s' % e)